Relay



April 22; 1924. 1,491,346

- E. W. GENT RELAY Filed Dec. 22. 1919 /n Veni fdyar W Genf.

y 30 preventy the 35f'-which is utilized to lock the n '1 the inventionand taken alon l`.section of thejdevice ta Patentedpr. 22, `1924.y

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SIGNOR `TO WESTERN ELECTRIC COMPANY,

Y-, l CORPORATION .OF NEW YORK.

" RELAY; f,

Application ineak December 191,9. squirt. 345,642.

kTo all whom it may 60mm.' V

Bje it known rthat I, EDGAR W. GENT, a citizen of they United Stat York,in the county ofNew York, State' of New York, have invented certainpnewand useful Improvements in Relays, of which the following is a full,clear, concise, andexact ription.` f f ff .f This i jvention rrelates tohigh potential ject 'of the invention is to provide a device ofthegeneral type indicated which `will Lpossess acertainty andpositiveness of Operation particularly adapting it kfor use in rematecontrol apparatus in which current of very-high voltage is employed,andA which can be operated at h' hs eed without an accompanying rebounfaus chatterin action at the contacts or a binding of relatively movableparts.y

The invention f electromagnet `of tpion with a switcharm pivoted at oneend ofthe coil and rarrari edcto co-operate with contactA members which'are of a spring. cushioned plunger ty e, designed to prevent achatterin action o the switch arm on the contacts. o yassist infthisyfunction and also,

`p ifing pressureof the contact members from beingtransmittedthrough thei switch yarm tocause the lunger ycore of the solenoidto bind in itssliy eway, a toggle construction ofthe link connection is 'providedplunger ina sitions itywill asoonsists generally `inan the solenoidtype, the

position aligned with the sume in its path of trave A suitable rest orshouldei` ,f on one of the` rlink members Serves'to prevent theoverthrowing of the toggle joint to a point beyond the' substantial yaligned locking position ofthelinks their inoperative condition In thedrawing, Figure 1 isa. horizontal `sectional view of a solenoid relavembodying t e 1ines,1-`.1 ofFigure' 2; .Figure 2 is a side elevation ofthe device in its inoperative condition;l `,Fig-` ure 3 isa viewsimi erto Figui-e2 showing a portion of the device in kits operative posi-` Mtion; and Figure 4is a. transverse vertical` )aany along the liner ofFigure r2.`r f

Referring to the drawingi there is shown atl an electromagnot oft esolenoid typer D", 'on un .enclosing k#ratificavork ...2. of

es, residing at New s buffer membersv yto absord.. theimpact yof thelunger'or core of which has elink connec`-y v magnetic material which`supports ak fixed k(ioreinember 4fextending part way into the olenoid.`A movable coreor plunger y5`is arranged toslidelongitudinally in theother end o thecoil, and ,a spring 6 serves to force the plungeroutwardly to its inoperative u 'position .when thefcoil is notenergized. Pivotedto a late 7 adjustably mounted ,on thefrontcoilsupporting member 8 of the framework is a switch arm 9 formedof any suitable insulating material .andv extending forwardly to asafedistance from the coil where they contact engaging members 10-y caryriedthereby can engage .the corres onding circuit terminal. contactsxllcarrie bythe insulating member 12. 4

The Contact members 11 are of the plunger typer and are mounted in seats13 in which compression springs 14:y act as cushions or swin ing :switcharm 9 and revent alreboun and chatteringaction thereof and to insureclosure of all contacts irrespectivefof Many slight misalignment of thecontacts.

` The switch arm9 is shown as provided 80 with four branches havingvthecorrespond-y ing ,contact engaging ,members 10 and suitable partitionsor shields'15 which serveto provide` compartments and insure a com lete.electricalseparation. of kthe contactsy rom 4each other. Terminalpieces 16 carried by lthe :contactfengaging.v members 10can beconnectedk 'infaiiy .desired-arrangement by ...conductors extending in abowed formation around the forward edges of the intervening partitions15 as at 17. A plate 18 corresponding to the member 12vis located asyshown and both members 12 and 18are provided. with suitable slotsinlwhich the vertical partitions 15. are held. The lower member 18isalsoprovided with a set of'spring contact pieces 19 which may serve ascircuit `terminal,members or merely as stops for the switch arm,y as maybe found desirable.

` An operative connection between the switch arm 9 and the plunger core5 of the solenoidconsists of a; pair of links 20 pivoted at oppositeends to the respective members. nother link'member 21 is pivoted to thelforkedstud 22 attached to the framework and forms a toggle constructionwiththe links 20 already referred to. The link Y21is provided with vaslot in which Athe pin 23 serving asthepivotal ,connection between the1in-ks 29 and plunger 5 can play. In the mutually aligned positions ofmembers 2O and 2l shown in Figure 2 of the drawing, the pin 23 rests onthe bottom of the slot in the link 21 and thus serves to support theouter end of the solenoid core 5 in a perfectly aligned position withrelation to its path of movement into the coil. Not only is the corelocked in a position to preveiit a binding action that would otherwisebe exerted by the pressure of its springs 14 through the contactplungers 11, but the switch arm 9 is held in firm engagement with theplunger contacts and thus chattering and arcing at the contacts isprevented.

lt will be seen that upon the energization of the solenoid 1 the plungercore 5 causes the switch arm 9 to make a rapid swing the toggle linkthrougii an arc suiiicient to create a very substantial air gap andproduce an effective break, as indicated in Figure 3 of the drawing. Anequally rapid return of the arm to the normal position shown in Figure 2can be eiected for certain purposes by the action of the spring 6 on theplunger 5 by providing for the automatic breaking of the energizingcircuit ofthe coil 1.

Upon the upward swinging of the arm 9 from the position shown in Figure3 4to that shown in Figure 2 the link members 20 and 21 are brought intovertical alignment as shown and are prevented from moving to the rightand beyond the aligned position by the presence of a shoulder or stop 26found on the link 21. In Figure 2 the arm is in normal engagement withthe contacts 11 and the springs 14 are shown under slight compressionbut because of the aligned position of the links 2O and 21 no lateralbinding action of the plunger 5 in its slideway can be formed. It willbe noted that a vertical adjustment of the switch arm supporting plate 7is provided by the slots 28-28 and the hexagonal headed screws 29-29thus facilitating the proper adjustnient of the related parts.

Under certain conditions it is desirable to also control the operationof a low potential circuit by the operation of the switching arm. Forthis purpose a plurality of contact springs 30-30 may be mounted in themember 12 as shown in Figure 2 and their operation brought about bymeans of the insulating stud 31, the lower end of which bears againstthe switch arm 9.

'What is claimed is:

1. A. high potential relay comprising: a solenoid magnet, a plunger corefor said magnet. circuit-controlling arm compris ing an electricalcontact. a link forming an operative connection between said arm andsaid plunger, a second link pivoted at one end to the framework of saidrelay and at the other end to the plunger and`forming with thefirst-named link a toggle construc ion, said toggle links being arrangedto assume an aligned locking position in the c xtended position of saidplunger to hold said plunger iii a position aligned with its path oftravel. C

2. A high potential relay comprising: an electromagnet, a switch armcomprising an electrical contact, a toggle link connection between saidarm and the ari'uatuie of said electioiuagiiet, said toggle beingai'i'angedto assume a locking position, and means included i-n saidtoggle to prevent lateral movement of the armature.

3. A high potential relay comprising an electroinagnet, an armaturetherefor, a switch-controlling arm, resiliently mounted contacts engagedthereby, a link member pivotally mounted to said armature and said arm,a second link member pivotally mounted at one end to the relay frameworkand having its otherend connected to the armature by a pin and slotconnection, said link members being in alignment and on opposite sidesof the armature in the normal position of the armature, and means inclued in one of said link members to take up the pressure exerted by theresilient contact members upon the arm when said armature is in itsnormal position.

4. A high potential relay comprising: a solenoid magnet, a plungerarmature therefor. a circuit-controlling arm pivoted at one end to therelay framework adjacent the magnet and extending away from said mag netin a direction substantially parallel to the axis thereof, a linkconnecting said arm at a point adjacent the pivoted end with thecorresponding end of the plunger of said magnet, a second link pivotedto the relay framework and having a pin-andslot connection with the endof the plunger, sai second link being arranged to form a to glevconstruction with the first-named lin said link being arranged to forman aligned locking position in the extended position of said plunger tothereby lock said arm in the corresponding position and prevent theplunger from binding in its slideway.

5. A high potential relay comprising: a solenoid magnet, a plunger coretherefor, a spring tending to move said core to an outwardly-extendedposition, a circuit-coiitrol ling arm comprising an electrical contact,a link forming an operative connection between said arm and plunger, asecond link pivoted at one end to the framework of said relay and at theother end to the plunger and forming with the first-named link a toggleconstruction, said toggle links being arranged to assume an alignedlocking position in the extended position of said plunger, and meanscarried by one of said links to preventthe outward movement of saidlinks beyond the aligned position.

6. A high potential relay comprising a solenoid magnet, a plungerarmature therefor, a circuit controlling arm pivoted at one end to therela framework and extending away from sai magnet in a directionsubstantially parallel tothe axisthereof, a toggle link connecting saidarm directl to the plunger armature and arranged to ock the plunger inits extended position, resilientl contact members engaged by the circuitcontrolling arm, and means carried by the toggle link to prevnt bindingof the plunger 10 1n yits slideway due to transverse ressure exerted bythe contact members W en the plunger is in its extended position.

In witness whereof, I hereunto subscribe my name 1919.

EDGAR W. GENT.

this 19th day of December A. D., l5

